Chris McDonough <chr...@plope.com> added the comment:
The case this that eagerly unwinding the app_iter is trying to defend against
is (as
you probably know) this one:
def someapp(environ, start_response):
start_response('200 OK', [... headers ...])
for item in listofbytes:
yield item
The pattern of calling start_response during the first iteration is, IMO,
insane and
supporting is is only a courtesty/kindness. Unwinding every iterator from
every
arbitrary downstream applications just in case someone does this, in my
estimation at least, will cause more problems (resource exhaustion) for people
who never do this more than not doing it will cause problems for people that
use
this pattern. You're right that someone could return a generator that streams
and
exhaust RAM that way but if it's consistency we're after, I'll just rip it out
instead.
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Repoze Bugs <b...@bugs.repoze.org>
<http://bugs.repoze.org/issue179>
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